Imo, it´s an okay event in it´s core, but many tiny things make it a cancer. Even thoug i don´t care about that transformation things, the enchantment stones are also limited to 7 days, which let me ask WHHHYYYYYYYY.
Atleast ultimates you can use instantly anyway, but still this 7 days crap sux.
That daevanion skill enchantment safety item is also nice.
But the limit per week of all those items is just meh.
Anyway, the actual events are the easiest time to get a legendary contract aswell even if it´s a random one. So it´s not a so bad event.